这轮廓光，渲染引擎得跑半小时

Warm golden-hour sunlight streams across an empty athletic track inside a large stadium, throwing beautiful rim lighting around a young woman's hair and casting soft, long shadows across the lanes; rows of empty blue seats and a large covered grandstand rise behind her. Dark-brown hair pulled into a high ponytail with a few loose strands framing her face, she wears a simple black athletic tank top, black running leggings, and white athletic shoes. Caught in a natural running-prep pose — one knee raised slightly as if warming up — her expression stays focused yet calm as she looks toward the side. Realistic skin and hair texture, detailed athletic clothing, natural proportions, shallow depth of field, subtle lens flare, cinematic sports photography, warm sunset color grading, authentic candid atmosphere, highly photorealistic, vertical 4:5 composition.